« Back to list

CVE-2015-9287

Status: ModifiedCritical (9.8)—

Directory Traversal was discovered in University of Cambridge mod_ucam_webauth before 2.0.2. The key identification field ("kid") of the IdP's HTTP response message ("WLS-Response") can be manipulated by an attacker. The "kid" field is not signed like the rest of the message, and manipulation is therefore trivial. The "kid" field should only ever represent an integer. However, it is possible to provide any string value. An attacker could use this to their advantage to force the application agent to load the RSA public key required for message integrity checking from an unintended location.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

CAM — THE University OF Cambridge WEB Authentication System Apache Authentication Agent

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2015-9287",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-05-13T16:29:00.350",
  "references": [
    {
      "url": "https://doi.org/10.1007/978-3-030-03251-7_1",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/grymer/CVE",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://doi.org/10.1007/978-3-030-03251-7_1",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/grymer/CVE",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Directory Traversal was discovered in University of Cambridge mod_ucam_webauth before 2.0.2. The key identification field (\"kid\") of the IdP's HTTP response message (\"WLS-Response\") can be manipulated by an attacker. The \"kid\" field is not signed like the rest of the message, and manipulation is therefore trivial. The \"kid\" field should only ever represent an integer. However, it is possible to provide any string value. An attacker could use this to their advantage to force the application agent to load the RSA public key required for message integrity checking from an unintended location."
    },
    {
      "lang": "es",
      "value": "Fue encontrada una vulnerabilidad de Salto de Directorio (Directory Traversal) en University of Cambridge mod_ucam_webauth before 2.0.2. Un atacante puede manipular el campo de identificación de clave (\"Kid\") del mensaje de respuesta HTTP del IdP (\"WLS-Response\"). El campo \"Kid\" no está firmado como el resto del mensaje y, por lo tanto, la manipulación es trivial. El campo \"Kid\" solo debe representar un número entero. Sin embargo, es posible suministrar cualquier valor de cadena. Un atacante podría usar esto para su ventaja para forzar al agente de la aplicación a cargar la clave pública RSA requerida para verificar la integridad del mensaje desde una ubicación no deseada."
    }
  ],
  "lastModified": "2026-06-17T00:36:13.057",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cam:the_university_of_cambridge_web_authentication_system_apache_authentication_agent:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A6D52381-2AFB-4AD5-B7D9-F4AA10F60C50",
              "versionEndExcluding": "2.0.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}